#include <stdio.h>
#include <math.h>
void main()
{
    double y;
    int x, m;
    for(y=1;y>=-1;y-=0.1)
    {
        m=acos(y)*10;
        for(x=1;x<m;x++)printf(" ");
        printf("*");
        for(;x<62-m;x++)printf(" ");
           printf("*\n");
    }

}